Objectives:
- Solve for an unknown value in two-step equations.
- Check your work by plugging your answer into the original two-step equation.
What is a two-step equation?
You have already solved one-step equations and learned that it only took one inverse operation to solve for the unknown value. Similarly, a "two-step" equation takes two inverse operations to solve for the unknown value in the equation.
You have already solved one-step equations and learned that it only took one inverse operation to solve for the unknown value. Similarly, a "two-step" equation takes two inverse operations to solve for the unknown value in the equation.
Let's take a look at the four different types of two-step equations that you will be solving:
Four Different Types of Two-Step Equations
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Before we look at some examples you will need to recap the addition, subtraction, multiplication, and division rules because these rules will come in handy when solving two-step equations.
Recap of the Addition/Subtraction, Multiplication, and Division Rules
Now that we have refreshed our minds on the rules, we can look at some examples!
Examples of Solving Two-Step Equations
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Your Turn
Solve the following two-step equations by solving for x:
